CN218913809U

CN218913809U - Double-cut-off and discharge floating ball valve

Info

Publication number: CN218913809U
Application number: CN202223008254.7U
Authority: CN
Inventors: 周向青
Original assignee: Kunshan Viza Valve Co ltd
Current assignee: Kunshan Viza Valve Co ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-04-25
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a double-cutoff and discharge floating ball valve, which comprises: the valve body is connected with a valve cover at the passage end of the valve body, valve seats are arranged at the passage ends of the valve body and the valve cover, and the valve seats are respectively and elastically connected with the valve body and the valve cover through cylindrical springs; the ball body is arranged between the valve seats; the valve rod penetrates through the valve body and is connected with the top end of the sphere. The double-cutoff and discharge floating ball valve provided by the utility model has the characteristics of simple valve structure, convenience in manufacturing and installation, small external dimension and no retention of medium.

Description

Double-cut-off and discharge floating ball valve

Technical Field

The utility model relates to a double-cutoff and discharge floating ball valve, and belongs to the technical field of ball valves.

Background

The ball valve uses a ball body as a switch piece for cutting off or connecting a pipeline. The existing floating ball valve is provided with two valve seats, so that the valve cannot freely move, the generated valve torque is large, medium is easy to accumulate in a middle cavity, the medium is not easy to discharge and damage, and risks and losses are caused to the valuable solid-liquid two-phase medium. Double cutoff and discharge float ball valve: compared with a common floating ball valve, the reserved valve seat compression amount of the common valve seat can not timely compensate the abrasion of the valve in the switching process.

Disclosure of Invention

The utility model aims to overcome the defect that the compression amount of a reserved valve seat of a common valve seat cannot timely compensate the abrasion of a valve in the switching process, and provides a double-cutoff and discharge floating ball valve.

A double shut off and bleed float ball valve comprising:

the valve body is connected with a valve cover at the passage end of the valve body, valve seats are arranged at the passage ends of the valve body and the valve cover, and the valve seats are respectively and elastically connected with the valve body and the valve cover through cylindrical springs;

the ball body is arranged between the valve seats;

the valve rod penetrates through the valve body and is connected with the top end of the sphere.

Further, an O-shaped ring is arranged at the contact position of the valve seat and the plane of the valve body.

Further, the flange end channel of the valve body is communicated with the cavity of the valve body.

Further, a gland flange is arranged between the valve rod and the valve body, and a top flange is arranged at the top of the gland flange;

further, a thrust pad is arranged at the joint of the gland flange and the valve rod.

Further, a graphite gasket is arranged at the joint of the gland flange and the top flange.

Further, a graphite gasket is arranged at the joint of the valve rod and the valve body.

Further, an O-shaped ring is arranged at the joint of the valve rod and the valve body.

Compared with the prior art, the utility model has the beneficial effects that: the double-cutoff and discharge floating ball valve provided by the utility model has the characteristics of simple valve structure, convenience in manufacturing and installation, small external dimension and no retention of medium;

the floating ball valve seat with double cutting-off and discharging designed by the utility model can freely and movably cling to the ball body under the pushing of medium pressure under high pressure to realize the sealing compensation compression quantity; the valve seat is provided with an initial load under low pressure, so that the valve seat is tightly attached to the ball body to realize low-pressure gas seal; the design has small opening and closing torque, meets the low torque requirement of customers, and reduces the driving type selection cost; the valve seat is designed with a self-discharging function, when the interception pressure of the middle cavity reaches a certain degree, the ball body is pushed away to realize automatic discharging, impurities are not easy to accumulate in the middle cavity, and the sealing performance is reliable; adopts two-piece split structure bolt connection, has smaller volume, light weight and few external leakage points, and has unlimited installation space.

Drawings

FIG. 1 is a schematic diagram of the present utility model;

in the figure: 1. a valve body; 2. a valve cover; 3. a sphere; 4. A valve stem; 5. a gland flange; 6. A top flange; 7. A valve seat; 8. A spring; 9. An O-ring; 10. A thrust pad; 11. graphite gaskets.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

As shown in fig. 1, a double cutoff and discharge floating ball valve is disclosed, comprising: the diameter of the flange end channel of the valve body 1 is the same as that of the middle cavity, the ball body 3 is arranged in the inner cavity of the valve body, and the valve seat 7 is arranged at the valve body and the valve cover end;

the upper portion of valve body 1 respectively is provided with valve rod 4, and valve rod 4 and valve body 1 joint portion are equipped with and have O shape circle and graphite gasket seal between the gland flange 5, and valve body 1 joint portion is equipped with O shape circle and graphite gasket 11, and the disk seat 7 back is equipped with the hole of being connected with valve body 1, and the hole is equipped with cylinder spring 8, guarantees the initial seal of spheroid 3 and disk seat 7.

With reference to fig. 1, an O-ring 9 is arranged at the contact position of the hole of the valve body 1 and the plane of the valve seat 7 in the embodiment, so that the sealing performance of the valve seat 7 and the area of the valve body 1 is enhanced. The joint of the valve rod 4 and the gland flange is provided with a thrust pad 10, and the thrust pad 10 can reduce friction force and valve torque. The graphite gasket 11 is more suitable for high temperature resistant environment, and enhances the sealing performance at high temperature.

The assembly sequence of the utility model is as follows: firstly, a spring 8 is placed in a valve seat spring hole and is filled with an O-shaped ring I9, a valve seat 7 is placed in a valve body 1 seat hole, then a ball body 3 is placed in an inner hole of the valve body 1, a valve rod 4 is filled in the upper part of the valve body 1 and is aligned with a valve rod groove of the ball body 3, a gland flange 5 is filled in the valve rod 4, and the reverse operation is performed during disassembly.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A double shut off and bleed float ball valve comprising:

the valve comprises a valve body (1), wherein a valve cover (2) is connected to the channel end of the valve body (1), valve seats (7) are arranged at the channel ends of the valve body (1) and the valve cover (2), and the valve seats (7) are respectively and elastically connected with the valve body (1) and the valve cover (2) through cylindrical springs (8);

the ball body (3), the said ball body (3) locates between valve seats (7);

the valve rod (4), valve rod (4) run through valve body (1) and are connected with the top of spheroid (3).

2. A double shut-off and bleed float ball valve as in claim 1 wherein said valve seat (7) is provided with an O-ring (9) in planar contact with the valve body (1).

3. A double shut-off and bleed float ball valve as in claim 1 wherein the flange end passage of the valve body (1) is in direct communication with the cavity of the valve body (1).

4. The double-cutoff and discharge floating ball valve according to claim 1, wherein a gland flange (5) is arranged between the valve rod (4) and the valve body (1), and a top flange (6) is arranged at the top of the gland flange (5).

5. A double shut off and bleed float ball valve as in claim 4 wherein said gland flange (5) is provided with a thrust pad (10) at the junction with the valve stem (4).

6. A double shut off and bleed float ball valve as in claim 4 wherein a graphite gasket is provided at the junction of said gland flange (5) and top flange (6).

7. A double shut-off and bleed float ball valve as in claim 1 wherein a graphite gasket (11) is provided at the junction of the valve stem (4) and the valve body (1).

8. A double shut off and bleed float ball valve as in claim 1 wherein said valve stem (4) is provided with an O-ring at the junction with the valve body (1).